node readline

gistfile1.sh

erik@roastbeef:~/proj$ cat child2.js 
var readline = require('readline'),
  rl = readline.createInterface(process.stdin, process.stdout);

rl.on('line', function(line) {
  console.log(line);
});
erik@roastbeef:~/proj$ time node child2.js < bigfile > derp

real	0m0.123s
user	0m0.048s
sys	0m0.048s
erik@roastbeef:~/proj$ wc -l derp
100088 derp
erik@roastbeef:~/proj$ sort derp | uniq -c
     10 
     10 "]}
      9 ,"bar":"baz","qux":["qoo"]}
      9 baz","qux":["qoo"]}
     10 {"fo
      9 {"foo":1
     10 {"foo":1,"ba
      9 {"foo":1,"bar":"
     10 {"foo":1,"bar":"baz"
     10 {"foo":1,"bar":"baz","qu
     10 {"foo":1,"bar":"baz","qux":[
     10 {"foo":1,"bar":"baz","qux":["qoo
  99922 {"foo":1,"bar":"baz","qux":["qoo"]}
     10 o":1,"bar":"baz","qux":["qoo"]}
     10 "qoo"]}
     10 ,"qux":["qoo"]}
     10 r":"baz","qux":["qoo"]}
     10 x":["qoo"]}